Dispenser with movable matrix comprising a plurality of tiny pills

• US 4,824,675 A
• Filed: 07/13/1987
• Issued: 04/25/1989
• Est. Priority Date: 07/13/1987
• Status: Expired due to Term

• Current Assignee: ALZA Corporation (Johnson & Johnson)
• Original Assignee: ALZA Corporation (Johnson & Johnson)
• Inventors: Eckenhoff, James B., Theeuwes, Felix, Wong, Patrick S. L., Cortese, Richard
• Primary Examiner(s): Swisher, Nancy A. B.
• Application Number:
  US07/072,506
• Time in Patent Office: 652 Days
• Field of Search: 424/438, 424/464, 424/466, 424/469, 424/473, 424/468, 424/458, 604/892.1
• US Class Current: 424/438
• CPC Class Codes: A61K 9/0004 Osmotic delivery systems; Sustained release driven by osmosis, thermal energy or gas
• CPC Class Codes: A61K 9/0068 Rumen, e.g. rumen bolus

Abstract

A dispenser is disclosed for delivering tiny pills to an environment of use. The dispenser comprising a wall that surrounds an internal space comprising a first mean in the dispenser for changing from a dispenser state to an environment of use state on leaving the dispenser, tiny pills in the first means, and a second means in the dispenser for aiding in displacing the first means for the dispenser.

Claims

1. A dispenser for administering a beneficial agent formulation to an animal environment of use, the dispenser comprising:

(a) a wall that surrounds and defines an internal lumen, the wall comprising at least in part a semipermeable composition that is permeable to the passage of fluid and is substantially impermeable to the passage of a beneficial agent;

(b) a plurality of tiny pills, the pills comprising;

(1) a core of a beneficial agent; and

(2) a wall that surrounds the beneficial agent;

(c) means in the lumen comprising the plurality of timy pills, which means substantially maintains its physical and chemical integrity and is substantially nonmeltable in the lumen of the dispenser, said means a carrier for delivering the timy pills from the lumen over time;

(d) means for occupying an increasing amount of space in the lumen for pushing the means comprising the tiny pills from the dispenser; and

,

(e) a mouth in the dispenser comprising a cross-sectional dimension substantially equal to the cross-sectional dimension of the lumen for delivering the tiny pills to the environment of use.

2. A dispenser for administering a plurality of tiny pills to animal environment of use, the dispenser comprising;

(a) a wall that surrounds and defines an internal lumen, the wall comprising at least in part a semipermeable composition that is permeable to the passage of fluid and is substantially impermeable to the passage of a beneficial agent;

(b) means in the lumen for administering a plurality of tiny pills to the animal environment of use, said means substantially maintaining its physical and chemical integrity and is substantially nonmeltable while in the lumen of the dispenser;

(c) a plurality of tiny pills housed in the means for administering the tiny pills, said tiny pills comprising;

(1) a beneficial agent formulation; and

(2) a wall that surrounds the beneficial agent formulation;

(d) means for occupying an increasing amount of space in the lumen for urging the means for administering the tiny pills from the dispenser;

(e) means in the lumen for maintaining the dispenser in the animal environment of use over time; and

(f) an opening in the wall of the dispenser comprising a cross-sectional dimension substantially equal to the cross-sectional dimension of the lumen for communicating with the means for administering the tiny pills to the environment of use.

3. A dispenser for administering tiny pills to an animal environment of use, the dispenser comprising:

(a) a hollow body member comprising an internal lumen and provided with an opening substantially equivalent to the cross-section of the lumen for establishing communication with the lumen;

(b) means in the lumen for administering tiny pills to the animal environment of use, said means substantially keeping its integrity in the lumen and is substantially nonmeltable in the lumen;

(c) a plurality of tiny pills housed in the means for administering the tiny pills, said tiny pills comprising;

(1) a beneficial drug; and

(2) a wall that surround the drug;

(d) means for occupying an increasing amount of space in the lumen for pushing the means for administering the tiny pills from the dispenser;

(e) a wall that surrounds the hollow body member comprising, at least in part, a semipermeable composition that is permeable to the passage of fluid and substantially impermeable to the passage of a beneficial agent; and

(f) means in the wall for communicating with the lumen, which means comprises a cross-section dimension corresponding to the cross-section of the means in the lumen for administering the tiny pills.

4. A dispenser for administering tiny pills to an animal environment of use, the dispenser comprising:

(a) a hollow body member comprising an internal lumen and provided with an opening substantial equivalent to the opening of the lumen for establishing communication with the lumen;

(b) means in the lumen for administering tiny pills to the animal environment of use, said means substantially keeping its integrity in the lumen and is substantially free of thermal degradation in the lumen of the dispenser

(c) a plurality of tiny pills in the means for administering the tiny pills, the tiny pills comprising;

(1) a beneficial drug; and

(2) a wall that surrounds the drug;

(d) means for occupying an increased volume in the lumen for displacing the means for administering the tiny pills from the dispenser;

(e) means in the lumen for maintaining the dispenser in the animal environment over time;

(f) a wall that surrounds the hollow body member comprising, at least in part, a semipermeable composition that is permeable to the passage of fluid and is substantially impermeable to the passage of the beneficial agent; and

(g) means in the wall communicating with the lumen for exposing the means for administering the tiny pills to the animal environment.

5. The dispenser for administering the tiny pills to an animal environment of use according to claim 4, wherein the wall of the tiny pill is semipermeable.

6. The dispenser for administering the tiny pills to an animal environment of use according to claim 4, wherein the wall of the tiny pills comprises an enteric composition.

7. The dispenser for administering the tiny pills to an animal environment of use according to claim 4, wherein the wall of the tiny pills is erodible in the environment of use.

8. The dispenser for administering the tiny pills to an animal environment of use according to claim 4, wherein the wall of the tiny pills comprises a microporous composition.

9. The dispenser for administering the tiny pills to an animal environment of use according to claim 4, wherein the wall of the tiny pills comprises a diffusional polymer.

10. The dispenser for administering the tiny pills to an animal environment of use according to claim 4, wherein the wall of the tiny pills comprises a reverse enteric composition.